| /* |
| * Copyright (C) 2015 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package com.android.server.power.stats; |
| |
| import android.annotation.NonNull; |
| import android.os.BatteryConsumer; |
| import android.os.BatteryStats; |
| import android.os.BatteryUsageStats; |
| import android.os.BatteryUsageStatsQuery; |
| import android.os.UidBatteryConsumer; |
| import android.util.SparseArray; |
| |
| /** |
| * Calculates power use of a device subsystem for an app. |
| */ |
| public abstract class PowerCalculator { |
| protected static final boolean DEBUG = false; |
| |
| protected static final double MILLIAMPHOUR_PER_MICROCOULOMB = 1.0 / 1000.0 / 60.0 / 60.0; |
| |
| /** |
| * Returns true if this power calculator computes power/duration for the specified |
| * power component. |
| */ |
| public abstract boolean isPowerComponentSupported( |
| @BatteryConsumer.PowerComponent int powerComponent); |
| |
| /** |
| * Attributes the total amount of power used by this subsystem to various consumers such |
| * as apps. |
| * |
| * @param builder {@link BatteryUsageStats.Builder that contains a list of |
| * per-UID battery consumer builders for attribution data. |
| * The calculator may modify the builder and its constituent parts. |
| * @param batteryStats The recorded battery stats. |
| * @param rawRealtimeUs The raw system realtime in microseconds. |
| * @param rawUptimeUs The raw system uptime in microseconds. |
| * @param query The query parameters for the calculator. |
| */ |
| public void calculate(BatteryUsageStats.Builder builder, BatteryStats batteryStats, |
| long rawRealtimeUs, long rawUptimeUs, BatteryUsageStatsQuery query) { |
| final SparseArray<UidBatteryConsumer.Builder> uidBatteryConsumerBuilders = |
| builder.getUidBatteryConsumerBuilders(); |
| for (int i = uidBatteryConsumerBuilders.size() - 1; i >= 0; i--) { |
| final UidBatteryConsumer.Builder app = uidBatteryConsumerBuilders.valueAt(i); |
| calculateApp(app, app.getBatteryStatsUid(), rawRealtimeUs, rawUptimeUs, query); |
| } |
| } |
| |
| /** |
| * Calculate the amount of power an app used for this subsystem. |
| * @param app The UidBatteryConsumer.Builder that represents the power use of an app. |
| * @param u The recorded stats for the app. |
| * @param rawRealtimeUs The raw system realtime in microseconds. |
| * @param rawUptimeUs The raw system uptime in microseconds. |
| * @param query Power calculation parameters. |
| */ |
| protected void calculateApp(UidBatteryConsumer.Builder app, BatteryStats.Uid u, |
| long rawRealtimeUs, long rawUptimeUs, BatteryUsageStatsQuery query) { |
| } |
| |
| /** |
| * Reset any state maintained in this calculator. |
| */ |
| public void reset() { |
| } |
| |
| protected static @BatteryConsumer.PowerModel int getPowerModel( |
| long consumedEnergyUC, @NonNull BatteryUsageStatsQuery query) { |
| if (consumedEnergyUC != BatteryStats.POWER_DATA_UNAVAILABLE |
| && !query.shouldForceUsePowerProfileModel()) { |
| return BatteryConsumer.POWER_MODEL_ENERGY_CONSUMPTION; |
| } |
| return BatteryConsumer.POWER_MODEL_POWER_PROFILE; |
| } |
| |
| protected static @BatteryConsumer.PowerModel int getPowerModel(long consumedEnergyUC) { |
| return consumedEnergyUC != BatteryStats.POWER_DATA_UNAVAILABLE |
| ? BatteryConsumer.POWER_MODEL_ENERGY_CONSUMPTION |
| : BatteryConsumer.POWER_MODEL_POWER_PROFILE; |
| } |
| |
| public static double uCtoMah(long chargeUC) { |
| return chargeUC * MILLIAMPHOUR_PER_MICROCOULOMB; |
| } |
| } |